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Unilateral Ultrasound-Guided Transversus Abdominis Plane Block After Nephrectomy; Postoperative Pain and Use of Opioids.

ABSTRACT: BACKGROUND:Pain has a wide spectrum of effects on the body and inadequately controlled postoperative pain may have harmful physiologic and psychological consequences and increase morbidity. In addition, opioid anesthetic agents in high doses can blunt endocrine and metabolic responses following surgery and are associated with side effects including dizziness, nausea, vomiting, constipation, and respiratory depression. OBJECTIVES:The current study aimed to investigate if unilateral ultrasound-guided transverse abdominal plane block (TAP-block) could reduce pain and postoperative use of patient requested analgesics following nephrectomy compared to local injection of the same ropivacaine dose in the surgical wound. PATIENTS AND METHODS:Retrospective chart reviews were performed in 42 consecutive patients who received TAP-block in conjunction with nephrectomy from November 2013 to August 2014 (group A). For comparison, data were used from 40 other nephrectomy patients registered as part of a previous study (group B). In this group the patients had received local ropivacaine injection in the surgical wound. On univariate analyses, the groups were compared by t-test and the Fisher exact test. Multivariate analyses were conducted by multiple linear regression. RESULTS:Mean surgical time was 162 minutes in group A and 92 minutes in group B (P < 0.0001). The means of visual analogue scale (VAS) were 3.05 and 1.55 in A and B groups, respectively (P = 0.001). The means of morphine consumption were 5.2 mg and 5.9 mg in groups A and B, respectively (P = 0.58); while the means of sufentanil use were 9.8 ?g and 6.0 ?g in groups A and B, respectively (P = 0.06). When controlling for age, tumor size and American society of anesthesiologists classification (ASA) score on multivariate analysis, TAP-block was associated with a significant increase in VAS (+1.4 [95% CI, 0.6 - 2.3], P = 0.001) and sufentanil use (+6.2 ?g [95% CI, 2.3 - 10.2], P = 0.003). There was no difference in morphine use on multivariate analysis (P = 0.99). CONCLUSIONS:TAP-block in conjunction with laparoscopic nephrectomy did not reduce pain or opioid consumption. On the contrary, it seemed to prolong surgical time.

SUBMITTER: Azawi NH

PROVIDER: S-EPMC4884609 | biostudies-literature | 2016 Mar

REPOSITORIES: biostudies-literature

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Unilateral Ultrasound-Guided Transversus Abdominis Plane Block After Nephrectomy; Postoperative Pain and Use of Opioids.

Azawi Nessn H NH Mosholt Karina Sif Sondergaard KS Fode Mikkel M

Nephro-urology monthly 20160312 2

<h4>Background</h4>Pain has a wide spectrum of effects on the body and inadequately controlled postoperative pain may have harmful physiologic and psychological consequences and increase morbidity. In addition, opioid anesthetic agents in high doses can blunt endocrine and metabolic responses following surgery and are associated with side effects including dizziness, nausea, vomiting, constipation, and respiratory depression.<h4>Objectives</h4>The current study aimed to investigate if unilateral ...[more]

PMID: 27247931

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Project description:Background:Postoperative pain management is important for the early recovery of the living donor patient. Patient-controlled opioid analgesia, epidural analgesia, or a combination of both is the preferred pain management after abdominal surgery although these approaches have serious side effects. The transversus abdominis plane (TAP) block has been increasingly used for postoperative pain management and the addition of dexamethasone to local anesthetic can prolong the duration of action. Objectives:This study evaluated the efficacy of ultrasound-guided three-quadrant TAP block analgesia with the addition of dexamethasone, compared to the continuous epidural analgesia in postoperative cumulative opioid consumption and pain scale in the first 24 hours following transperitoneal laparoscopic living donor nephrectomy. Methods:A prospective randomized control study was conducted on 50 patients with ASA I-II, 18 - 65 years old, BMI 18 - 30, and undergoing transperitoneal laparoscopic donor nephrectomy under general anesthesia. The patients were randomly assigned into either a three-quadrant TAP block group (n = 25) with 20 mL of 0.25% bupivacaine plus dexamethasone 8 mg or a continuous epidural group (n = 25) using 0.125% bupivacaine postoperatively. The morphine consumption and the numerical rating scale (NRS) at rest and movement were evaluated at 2, 6, 12, and 24 hours postoperatively. The postoperative first-time mobilization and duration of urinary catheter usage were recorded. Results:Patients demographic characteristics were similar in the two groups. During 24 hours after the surgery, cumulative morphine consumption (P = 0.232), the NRS at rest and movement (P > 0.05), and the first-time mobilization (P = 0.075) were not significantly different between the groups, except that the NRS during movement at 12 hours was significantly lower in the TAP block group (P = 0.004). The duration of urinary catheterization was significantly longer as a side effect in the continuous epidural group (P < 0.001). Conclusions:The three-quadrant TAP block with the addition of dexamethasone showed comparable analgesic effects as the continuous epidural analgesia in cumulative opioid consumption and pain scale in the first 24 hours following transperitoneal laparoscopic donor nephrectomy.

Project description:BACKGROUND:Ultrasound-guided lateral transversus abdominis plane (TAP) block can provide definite analgesia to the anterior abdominal wall. However, whether this method is useful in renal surgery through the lateral abdominal wall pathway remains unknown. The study aimed to evaluate the analgesic efficacy of lateral TAP block for retroperitoneoscopic partial or radical nephrectomy. METHOD:In this prospective, randomized, double-blind, placebo-controlled trial, eligible patients were randomized into two groups. After anaesthesia induction, ultrasound-guided lateral TAP block was performed with either 30?ml of 0.4% ropivacaine (Group T) or an equivalent volume of normal saline (Group C). The primary outcomes were opioid consumption during surgery and in the first 24?h after surgery. Secondary outcomes included postsurgical pain intensity immediately awakening from anaesthesia and at 0.5, 1, 2, 6, 12, and 24?h after surgery, as well as recovery variables including the incidence of postoperative nausea and vomiting (PONV), sleep quality, time to first ambulation, drainage and length of hospital stay. RESULTS:A total of 104 patients were enrolled and randomized (53 in Group T and 51 in Group C). Laparoscopic surgery was converted to open surgery in one patient of Group T; this patient was excluded from the outcome analysis. The opioid consumption during surgery (intravenous morphine equivalent dose: median 35.0?mg [interquartile range 18.0, 49.6] in Group C vs. 40.3?mg [20.9, 59.0] in Group T, P?=?0.281) and in the first 24?h after surgery (10.8?mg [7.8, 21.7] in Group C vs. 13.2?mg [8.0, 26.6] in Group T, P?=?0.311) did not differ significantly between groups. There were no significant differences between groups regarding the pain intensity at all time points after surgery and the recovery variables (all P?>?0.05). CONCLUSIONS:Our results showed that, in patients undergoing retroperitoneoscopic renal surgery, preoperative lateral TAP did not decrease intra- and postoperative opioid consumption, nor did it relieve pain intensity or promote postoperative recovery in the first 24?h after surgery. However, the trial might be underpowered. TRIAL REGISTRATION:This study was registered on November 4, 2017, in the Chinese Clinical Trail Registry with the identification number ChiCTR-INR-17013244 .

Project description:BackgroundThe transversus abdominis plane (TAP) block is an important non-narcotic adjunct for post-operative pain control in abdominal surgery. Surgeons can use laparoscopic guidance for TAP block placement (LTAP), however, direct comparisons to conventional ultrasound-guided TAP (UTAPs) have been lacking. The aim of this study is to determine if surgeon placed LTAPs were non-inferior to anesthesia placed UTAPs for post-operative pain control in laparoscopic colorectal surgery.MethodsThis was a prospective, randomized, patient and observer blinded parallel-arm non-inferiority trial conducted at a single tertiary academic center between 2016 and 2018 on adult patients undergoing laparoscopic colorectal surgery. Narcotic consumption and pain scores were compared for LTAP vs. UTAP for 48 h post-operatively.Results60 patients completed the trial (31 UTAP, 29 LTAP) of which 25 patients were female (15 UTAP, 10 LTAP) and the mean ages (SD) were 60.0 (13.6) and 61.5 (14.3) in the UTAP and LTAP groups, respectively. There was no significant difference in post-operative narcotic consumption between UTAP and LTAP at the time of PACU discharge (median [IQR] milligrams of morphine, 1.8 [0-4.5] UTAP vs. 0 [0-8.7] LTAP P = .32), 6 h post-operatively (5.4 [1.8-17.1] UTAP vs. 3.6 [0-12.6] LTAP P = .28), at 12 h post-operatively (9.0 [3.6-29.4] UTAP vs. 7.2 [0.9-22.5] LTAP P = .51), at 24 h post-operatively (9.0 [3.6-29.4] UTAP vs. 7.2 [0.9-22.5] LTAP P = .63), and 48 h post-operatively (39.9 [7.5-70.2] UTAP vs. 22.2 [7.5-63.8] LTAP P = .41). Patient-reported pain scores as well as pre-, intra-, and post-operative course were similar between groups. Non-inferiority criteria were met at all post-op time points up to and including 24 h but not at 48 h.ConclusionsSurgeon-delivered LTAPs are safe, effective, and non-inferior to anesthesia-administered UTAPs in the immediate post-operative period.Trial registryThe trial was registered at clinicaltrials.gov Identifier NCT03577912.

Dataset Information

Unilateral Ultrasound-Guided Transversus Abdominis Plane Block After Nephrectomy; Postoperative Pain and Use of Opioids.

Publications

Unilateral Ultrasound-Guided Transversus Abdominis Plane Block After Nephrectomy; Postoperative Pain and Use of Opioids.

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